Optical receptacle and optical module

Abstract

An optical receptacle having a first optical surface, a second optical surface, a first engaging section, and a second engaging section. The first optical surface has incident thereto first emitted light emitted from a photoelectric conversion element. The second optical surface emits, towards an end surface of an optical transmission body, the first emitted light that has been incident to the first optical surface and has passed through the interior of the optical receptacle. The first engaging section is arranged on a first side surface that is different from the surface on which the first optical surface is formed and the surface on which the second optical surface is formed. The second engaging section is arranged on a second side surface facing the first side surface across an optical path for the first emitted light or a second emitted light.

1 . An optical receptacle configured to be disposed between a photoelectric conversion element and an optical transmission member, and configured to optically couple the photoelectric conversion element with an end surface of the optical transmission member, the optical receptacle comprising:
 a first optical surface configured to allow incidence of first emission light emitted from the photoelectric conversion element, or to emit, toward the photoelectric conversion element, second emission light which has been emitted from the end surface of the optical transmission member and has passed through inside of the optical receptacle;   a second optical surface configured to emit, toward the end surface of the optical transmission member, the first emission light which has entered the optical receptacle from the first optical surface and has passed through the inside of the optical receptacle, or to allow incidence of the second emission light emitted from the end surface of the optical transmission member;   a first fitting part disposed in a first side surface which is neither a surface in which the first optical surface is formed nor a surface in which the second optical surface is formed; and   a second fitting part disposed in a second side surface which is opposite to the first side surface with a light path of the first emission light or a light path of the second emission light therebetween, the second fitting part having a shape capable of being fitted to the first fitting part.   
     
     
         2 . The optical receptacle according to  claim 1 , wherein the optical receptacle is made of resin. 
     
     
         3 . The optical receptacle according to  claim 1 , wherein four first optical surfaces are provided as the first optical surface and four second optical surfaces are provided as the second optical surface. 
     
     
         4 . The optical receptacle according to  claim 1 , wherein twelve first optical surfaces are provided as the first optical surface and twelve second optical surfaces are provided as the second optical surface. 
     
     
         5 . The optical receptacle according to  claim 1 , further comprising a reflection surface configured to reflect, toward the second optical surface, the first emission light which has entered the optical receptacle from the first optical surface, or to reflect, toward the first optical surface, the second emission light which has entered the optical receptacle from the second optical surface. 
     
     
         6 . The optical receptacle according to  claim 5 , wherein:
 the reflection surface is a part of an inner surface of a recess formed in the optical receptacle; and   the recess opens outward at the first side surface and the second side surface.   
     
     
         7 . An optical module comprising:
 a substrate;   a photoelectric conversion element disposed on the substrate; and   a plurality of the optical receptacles according to  claim 1 , the plurality of the optical receptacles being disposed on the substrate such that the first optical surface is opposite to the photoelectric conversion element,   wherein the plurality of optical receptacles are coupled with each other such that the first fitting part and the second fitting part adjacent to each other are engaged with each other.